Settings → Battery → Battery Health & Charging. Below 80% is Apple's service recommendation. Symptoms: unexpected shutdowns, device feels slower, charges to 100% but drains fast, gets hot charging.

Yes — below 80% battery health, iOS applies performance throttling. Replacing the battery removes throttling and restores full processing speed. The device feels noticeably faster across all apps.

Yes — Apple has discontinued battery supply for XS, XS Max, and XR from authorised centre supply chains. iAssist stocks OEM-grade batteries for these models independently. Same-day replacement available.

From iPhone 15 onwards, batteries are paired to the device. Standard replacement batteries show an 'unknown battery' message and may report health inaccurately. Decoded batteries communicate correctly with the pairing system — no warning, accurate health percentage.

Stop charging immediately. Do not compress the device. Bring it in as soon as possible — a swollen battery is a safety risk. We remove swollen batteries safely and assess any screen or frame damage.

Same-day at our Silvamonte centre — typically 30–60 minutes. Models requiring screen removal first take slightly longer.

Apple's warranty covers manufacturing defects — not wear from normal use. Third-party battery replacement does not affect your statutory consumer rights in South Africa.

Battery health percentage can be inaccurate on heavily cycled batteries. We test capacity directly. Other causes: background apps, connectivity settings. We diagnose the actual cause before recommending repair.